f9a43cb54117b3414548c11cba12f2ad15efb7b22ee2e81028cf6967f0baec83

Analysis

max time kernel
104s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
02/10/2022, 00:31

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General

Target

f9a43cb54117b3414548c11cba12f2ad15efb7b22ee2e81028cf6967f0baec83.exe
Size

228KB
MD5

6ea7bb8e50e8196a54340ed09175b420
SHA1

65dfb95d3c818d48d1f9fb447a7791fafb94dc0d
SHA256

f9a43cb54117b3414548c11cba12f2ad15efb7b22ee2e81028cf6967f0baec83
SHA512

30c328631cfd96284c43007714586af43ab0439a9e3496bbec4ca4c6250d9c69e697ab6d7099b7b7ea5cf62ef8685a473f298a0e6e708f53cd165ce8a0a2703a
SSDEEP

6144:liwOYMmQolHQDinWTZqAukQJ3aCynEMOgL8y6E:wZnDinWTYAukQJ3pynEMOgL8y6

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4228	sunuv.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	f9a43cb54117b3414548c11cba12f2ad15efb7b22ee2e81028cf6967f0baec83.exe

Maps connected drives based on registry 3 TTPs 4 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	sunuv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	f9a43cb54117b3414548c11cba12f2ad15efb7b22ee2e81028cf6967f0baec83.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	f9a43cb54117b3414548c11cba12f2ad15efb7b22ee2e81028cf6967f0baec83.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	sunuv.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 24 IoCs

pid	Process
2676	f9a43cb54117b3414548c11cba12f2ad15efb7b22ee2e81028cf6967f0baec83.exe
2676	f9a43cb54117b3414548c11cba12f2ad15efb7b22ee2e81028cf6967f0baec83.exe
2676	f9a43cb54117b3414548c11cba12f2ad15efb7b22ee2e81028cf6967f0baec83.exe
2676	f9a43cb54117b3414548c11cba12f2ad15efb7b22ee2e81028cf6967f0baec83.exe
2676	f9a43cb54117b3414548c11cba12f2ad15efb7b22ee2e81028cf6967f0baec83.exe
2676	f9a43cb54117b3414548c11cba12f2ad15efb7b22ee2e81028cf6967f0baec83.exe
2676	f9a43cb54117b3414548c11cba12f2ad15efb7b22ee2e81028cf6967f0baec83.exe
2676	f9a43cb54117b3414548c11cba12f2ad15efb7b22ee2e81028cf6967f0baec83.exe
2676	f9a43cb54117b3414548c11cba12f2ad15efb7b22ee2e81028cf6967f0baec83.exe
2676	f9a43cb54117b3414548c11cba12f2ad15efb7b22ee2e81028cf6967f0baec83.exe
2676	f9a43cb54117b3414548c11cba12f2ad15efb7b22ee2e81028cf6967f0baec83.exe
2676	f9a43cb54117b3414548c11cba12f2ad15efb7b22ee2e81028cf6967f0baec83.exe
4228	sunuv.exe
4228	sunuv.exe
4228	sunuv.exe
4228	sunuv.exe
4228	sunuv.exe
4228	sunuv.exe
4228	sunuv.exe
4228	sunuv.exe
4228	sunuv.exe
4228	sunuv.exe
4228	sunuv.exe
4228	sunuv.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2676	f9a43cb54117b3414548c11cba12f2ad15efb7b22ee2e81028cf6967f0baec83.exe
4228	sunuv.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2676 wrote to memory of 4228	2676	f9a43cb54117b3414548c11cba12f2ad15efb7b22ee2e81028cf6967f0baec83.exe	88
PID 2676 wrote to memory of 4228	2676	f9a43cb54117b3414548c11cba12f2ad15efb7b22ee2e81028cf6967f0baec83.exe	88
PID 2676 wrote to memory of 4228	2676	f9a43cb54117b3414548c11cba12f2ad15efb7b22ee2e81028cf6967f0baec83.exe	88

C:\Users\Admin\AppData\Local\Temp\f9a43cb54117b3414548c11cba12f2ad15efb7b22ee2e81028cf6967f0baec83.exe
"C:\Users\Admin\AppData\Local\Temp\f9a43cb54117b3414548c11cba12f2ad15efb7b22ee2e81028cf6967f0baec83.exe"
1⤵
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2676
- C:\Users\Admin\sunuv.exe
  "C:\Users\Admin\sunuv.exe"
  2⤵
  - Executes dropped EXE
  - Maps connected drives based on registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:4228

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\sunuv.exe

Filesize
228KB

MD5
6ea7bb8e50e8196a54340ed09175b420

SHA1
65dfb95d3c818d48d1f9fb447a7791fafb94dc0d

SHA256
f9a43cb54117b3414548c11cba12f2ad15efb7b22ee2e81028cf6967f0baec83

SHA512
30c328631cfd96284c43007714586af43ab0439a9e3496bbec4ca4c6250d9c69e697ab6d7099b7b7ea5cf62ef8685a473f298a0e6e708f53cd165ce8a0a2703a

Download Submit
C:\Users\Admin\sunuv.exe

Filesize
228KB

MD5
6ea7bb8e50e8196a54340ed09175b420

SHA1
65dfb95d3c818d48d1f9fb447a7791fafb94dc0d

SHA256
f9a43cb54117b3414548c11cba12f2ad15efb7b22ee2e81028cf6967f0baec83

SHA512
30c328631cfd96284c43007714586af43ab0439a9e3496bbec4ca4c6250d9c69e697ab6d7099b7b7ea5cf62ef8685a473f298a0e6e708f53cd165ce8a0a2703a

Download Submit